The wavelengths of two sound notes in air are 40 195 ~m and 40 193 ~m . Each note produces 9 beats per second separately with a third note of fixed frequency. The velocity of sound in air in m / s is

Step-by-step solution

Here, v₁= v ( 40 195 ) array ll and & v₂= v ( 40 193 ) & v₁= v(195) 40 array and v₂= v(193) 40 According to given condition Adding Eqs. (i) and (ii) aligned 18= v 40 (195-193) & = 2 v 40 18= v 20 or v & =360 ~m / s aligned